HCID 13622588, compound → HCID 13622612, compound

Participants

Reaction Steps

A mixture of tert-butyl 3(S)-[8-tert-butoxycarbonylamino-1(S)-ethoxycarbonyloctyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetate (0.45 g) and 5N hydrogen chloride-ethyl acetate solution (10 ml) is allowed to stand for 3.5 hours at room temperature. The mixture is diluted with petroleum ether (80 ml) to precipitate colorless powder, which is collected and dried in vacuo to give 3(S)-[8-amino-1(S)-ethoxycarbonyloctyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine-5-acetic acid.dihydrochloride (0.37 g).

Provenance & Evidence